i suggest you contact the Cisco TAC for specific trouble shooting. Problems related to a PRI and a gateway module can range from the Telco provider down to local wiring in your facility to configuration parameters on the gateway. Too many variables to try and troubleshoot for you on a BB.
As for the CSU, both the 3525 and 3540 GW module have built-in CSUs. Neither support LBO capabilities. If your GW sits a great distance from your local demarc, the addition of a CSU that supports LBO might be helpful. If you attempt this, remember that inter-CSU connections require you to flip the transmit and receive pairs. On a PRI, the TX pairs are 1&2 and the RX pairs are 4&5.
There are cases/situations where we have to configure custome CPTONE to resolve FXO disconnect issue. Following are situations which can arise due to FXO disconnect issue:
Phone A calls Phone B, Phone B does not answer. Phone A then goes on-hook but Phon...
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SymptomsI’m doing a factory reset on the mobile board and it’s giving me the same issues that I wasn’t able to also send over last time. It says that it can’t connect to the server because of a firewall (we don’t have one) and then sometimes it...